The ubiquitous variable resistance circuit network shown in Figure… But a sticky question remains: What if the polarity of the VA – VB differential is subject to reversal...
Articles and news - 9
Synthesize precision bipolar Dpot rheostats
Unlocking the possibilities of programmable logic
We often say that logic devices are the glue to every electronics design, but they are often the last parts that you might think about when choosing components for a system...
Generating negative voltages - why you need level shifting in buck-boost circuits
Inverting buck-boost circuits are commonly used for generating negative supply voltages from positive voltages. The most important step is ensuring that the negative voltages are generated correctly. However, additional level shifting circuits may be necessary...
Expanding output range of step-up converter
This is one real-life quest: How do we increase the output voltage of a step-up converter? If you have unlimited access to the right ICs, you are one lucky dog, but what if you don’t?...
Espressif's tiny ESP32-H2-WROOM-07 delivers minimal-footprint Bluetooth Low Energy, Thread, and more
Espressif has launched two new ESP32-H2 Bluetooth Low Energy (BLE) and IEEE 802.15.4 modules, designed for the Internet of Things (IoT)...
Temperature-sensor circuit provides dual-slope output
The excellent linearity of integrated-circuit temperature sensors makes them ideal for direct analog compensation of the thermally induced errors inherent in many circuits...
Adjust tempco in size and sign
Zeroing out temperature variations on a production line is a challenging task when the device to be compensated has a temperature coefficient that varies in both magnitude and sign from unit to unit...
Eliminate clicks when muting single-ended audio
It’s easy to mute a balanced signal line. Simply short the terminals or break the signal path. But when the line is unbalanced and the output has strong dc bias, trying to mute the circuit with these methods will affect the output’s bias voltage, producing tremendous “clicks”...
Two-switch topology benefits forward and flyback power converters
Designers tend to favor forward- and flyback- converter topologies for loads less than 200 W because they are simple and can power multiple isolated outputs. Their simplicity is partially based on the fact that these converters use a single ground-referenced transistor switch...
∆VBE bread dough incubator
I was surprised recently when a two-decade-old design idea of mine for take-back-half temperature control got a question from reader John Louis Waugaman. John says he needs a way to control the temperature of batches of rising bread dough...
